Whistling projectile



June 27, 1944. v. G. HERMAN WHISTLING PROJECTILE Filed Oct. 15, 1941 INVENTOR tar 6 Patented June 27, 1944 UNITED STATES PATENT OFFICE WHISTLING PROJECTILE W Victor George Herman, New York, N. if. Application October 15, 1941, Serial No. 415,014

7 Claims.

My present invention relates to projectiles and has for its main object a construction by which projectiles are producing a screaming and whistling sound during flight. i

It must be stressed that this screaming sound can be heard over th entire distance being covered by the projectile during flight. Moreover,

the screaming noise caused by the projectile' creates the impression of a much greater number of shells as there actually are. Thus the noise caused by this new type of projectile proposed herewith is not only'greater, but also extends over a much larger area than in case of projectiles of the usual type.

It is a further object of mypresent invention to combine this eflect with means to eliminate as far as possible the vacuum caused by the rear face of the projectile during flight.

It is another object of my present invention to provide also means to close any air passages provided in the projectile and in the opening at the rear face of the same until the projectile has left the bore of the gun,

With the above objects in view, my present invention chiefly consists in combining with a projectile a whistling device built into the same in such a manner as to produce a whistling sound during the flight of this projectile.

Inaccordance with a preferred embodiment of my invention I provide in a projectile in combination atleast one air passage communicating at both ends with the exterior and a whistling device built into this air passage and functioning in the above'described away.

This air passage may extend either only in the nose pieces or from the nose to the cylindrical side wall of the projectile or from this side wallto the rear. projectile face. In latter case this air passage is not only adapted to contain the whistling sound producing device but serves also for reducing' or eliminating as far as practicable the vacuum set up by the rear face of the projectile.

In another embodiment of my present invention I combine in a projectile two bores: one of these bores communicates at one end through the shoulder of the nose or the cylindrical wall of the projectilewith the exterior and is closed at its other end; and the other bore is connected at one end withthe above bore and communicates at its other'end with the exterior. These two bores are shaped in'such a manner as to be adapted to act together as whistle and to produce a whistling sound during the flight of the projectile. 1 l

The novel features which I consider as characteristic for my invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawing, in which:

Figure 1 is a side view of a projectile constructed in accordance with my present invention, partly in section;

Figure 2 is a side view of a modification of the projectile shown in Fig. 1, partly in section;

Figure 3 is an end view of the projectil shown in Fig. 2;

Figure 4 is a longitudinal section of still another embodiment of my present invention;

Figure 5 is a longitudinal section of a part of a projectile provided with two cooperating bores as whistling device;

Figures 6 and 7 are longitudinal sections of two modifications of the projectile shown in Fig. 5; and

Figure 8 is a side view of a projectile equipped with a series of whistle-like cooperating bores provided with a common closing plate for the openings of these bores in the rear face of the projectile.

Referring now to the drawing in which like characters of reference designate similar parts in the various views, I0 designates the projectile bearing on its rear part a rotating or driving flange ll. Projectile lo consists as usual, of casing I2 containing the explosive material l3 and a nose I4 in which a fuse is arranged.

In accordance with my present invention air passages are providedin casing I2 and/or nose M of the projectile. H i In the projectile shown in Fig. 1 each of the air passages I5 is'communicating with the exterior at one end through an opening I6 in the nose I4 and atits other end through an opening ll in the side wall of easing l2. A whistling member l8 of any conventional type is arranged in this air passage in such a manner as to produce a whistlingsound during flight of projectile l0.

I It is important that air passage l5 and all other air passages described below in detail be arranged in such a manner as to enable entering of air through its front opening during rotation 'of the projectile. Therefore it is advantageous to arrange these air passages inclined to the axis of rotation of the projectile; if possibl vide tubes 23 servin'giasv'airpassages? I thesetubes communicates with. the exterior at tubes a whistling device? Bf'is f arrtinged' face 2 2, enabling thereb' passage J umg device" or whistling means these air passages should be of helical shape arranged coaxially with the axis: of rotation.

In Fig. 2 another embodiment of my invention is shown. Each of the air passages l9 communicates with the exterior at the one end through an opening 20in the side wall of casing l2 and at its other end through an opening 2! in the rear face 22 oi the projectile. Also in this case a whistling member passages I9. r

It is well, known atyduringifiight oithe pro-1 jectile a vacuumis tuip behind therear 'fac' 22. The air flowing through passages I9 eliminates, as far as practicable, this vacuum. i

is arranged in each of the air As shown in Fig.3 I prefer to arrangea num-.

of r P s es I9 and arrange their 0555;

ings 2| substantially evenly distributed-overthe rear face 22 of the projectile. This results i substantially complete eliminationofth'e 4 team behind the rear face. e 5; :21 .i: As shown in Fig. 4, it is also possible ,to proabove described way.

The whistling device s is their required position in the'tubeeither by shoulder 4-5,- shbwzn in'FigsiZ and orbyco'nical shaping of the bores l5, as shownihFig. 1 'It is important that'fduring ignition "oi the powder charge iised ionfi'ring the" projectile the openings 25 be "closed; so that the fullpressure of the expanding gases may act whenexpand ing' on the rear-face 22"of'projectile' l0. .In'order to attain this object, I-provide means adapted to closeopenings 25 during firin'g these means be arranged in such a manner; owever. 4 get detached from th e projectile after the"same ha n e i t b'r'e mi fih ve found that a*plate"26'may very well serve this purpose; this plate may be held in contact with highly polished contacting I V hesive provided betweeri these contacting pieces or by' making this plate magnetic. 111'th latter these passa s i lt'should be d at -he expressio present specification and appended j tended to" be understood in' its broadest-'sen'se; I

eaving' the lo" eof were exterior," and is lo'sedi a flow entering through the front opening of the.

first bore causes a whistling sound during flight of the projectile.

-'I1I1 the embodiment shown in Fig. 5 both bores ar -arranged in nose M of the projectile: Bore '2! communicates through its front opening 28 with the exterior and is closed at its rear end 29. Bore 30 communicates at its one end through opening 3| with bore 21 and at its other end through opening 32 withthe exterior. Both bores .This whistling edge is producing in'comination with bore 21 a whistling sound during theprojectile. In somecases it is adto make opening 32 larger than the cdnnectingiopening 31 in order to' avoid damp hes oscillations caused by vibration fthainc' uniH'in bQre 21. U V y :In:Fig.6 another embodimentof my'invention efihewn? 3.9!? 39 e mm nieai s mi s f end u hthon f 7 4 .5? 'A'W ihf he Q rear d sho'w'ni'the main portionpf his bore is arranged 1. th side W1 0i cas fB re 31 con ec b i 'j n theab ve desc 'fiereflc is as op n n 38 is de'i al 9 c in 'ji z ibe e a Pins' hroughbpenin 38 at at"le s substantially reduces the v F W .byf jthis" flange. Thev relative arran'gementfofjbores 3 4 and 31 is also such as to ause Wh i u u ing flig t of t P "i ar'tM Terence s mvided may; also find ains c life this means thatzalldevices"=which-are adaptedto cause a whistling sound when exposed 'to anair flow should'be comprehended-withinthe:nieane ing' of the. above expression. j Thus, 'for instance,

this whistling; device maywonsistrof .one ormore I vibrating members arranged :stationary or. rotate ably within the. air passage.v-

In Figures 5-8 of the. drawing 1 have whistling. devices composed f tw o The first? bore communicates t.

the exterior and 'isfclose' at it the second bore is connected a 1t's one end ith the iment "of these bores such 'that the "ting *fzituiesthat; from the standpoint", of prior 9; aith;ssansti te ssen ial haracteri tics.

the generic or specific aspects of this invention and, therefore, such adaptations should and are intended to be comprehended within the meaning and range of equivalency of the following claims.

What I claim as new and desire to secure by LettersPatent is:

1. In a projectile having a body of generally cylindrical contour, at least one air passage within said body being open at both ends and communicating at said ends with the exterior, and means producing a whistling sound arranged within said projectile body and combined with said air passage within said body in such a manner as to produce a whistling sound during the flight of said projectile.

2. In a projectile having a body of generally cylindrical contour, an air passage Within said body extending at least partly in longitudinal direction of said projectile, said air passage being open at both ends and communicating at said ends with the exterior, and means producing a whistling sound arranged in said air passage within said body in such a manner as to produce a whistling sound during the flight of said projectile.

3. In a projectile having a body of generally cylindrical contour, in combination at least one air passage within said body extending in longitudinal direction thereof and opening at one end through the nose and at the other end through the rear face of said projectile and whistling means arranged within said projectile body and combined with said air passage within said body in such a manner as to produce a whistling sound during the flight of said projectile.

4. In a projectile having a body of generally cylindrical contour in combination an air passage within said body extending in longitudinal direction thereof, said air passage being open at both ends, opening at one end through the cylindrical side Wall and at the other end through the rear face of said projectile, communicating at both said open ends with the exterior, and whistling means arranged within said projectile body and combined with said air passage within said body in such a manner as to produce a whistling sound during the flight of said pro- J'ectile.

5. In a projectile having a body of generally cylindrical contour, an air passage within said body extending in longitudinal direction thereof, said air passage being open at both ends and communicating with the exterior at its one end through the front end of said projectile body and at its other end through the shoulder of the nose of said projectile body, and whistling means built into said air passage in such a manner as to produce a whistling sound during the flight of said projectile.

6. In a projectile having a body of generally cylindrical contour, at least one air passage within said body extending in longitudinal direction thereof, said air passage being open at both ends and communicating with the exterior at one end. through the nose and at the other end through the rear face of said projectile body, Whistling means built into said air passage in such a manner as to produce a whistling sound during the flight of said projectile, and a cover plate arranged on said rear face of said projectile body in such a manner as to cover the opening of said air passage in said rear face during firing of said projectile and to be detached therefrom during its flight.

7. In a projectile having a projectile body of generally cylindrical contour, at least one air passage within said body extending in longitudinal direction thereof, said air passage being open at both ends and opening at one end through the nose and at the other end through the rear face of said projectile body, whistling means built into said air passage in such a manner as to produce a whistling sound during the flight of said projectile, and a cover plate of magnetic sheet metal adapted to cover the opening of said air passage within said projectile body in said rear face of said body during firing of said projectile and adapted to be detached therefrom during flight of said projectile.

VICTOR GEORGE HERMAN. 

